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Finding the Fourth Proportional to 695,151.56, 959,229.85 and 389,185.40

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Solution

The fourth proportional to 695,151.56, 959,229.85 and 389,185.40 is: 537,031.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,151.56 : 959,229.85 = 389,185.40 : x
  2. Step 2: Convert to fraction form
    695,151.56/959,229.85 = 389,185.40/x
  3. Step 3: Cross multiply
    695,151.56x = 959,229.85 × 389,185.40
  4. Step 4: Simplify right side
    695,151.56x = 373,318,252,864.19
  5. Step 5: Solve for x
    x = 373,318,252,864.19/695,151.56
  6. Step 6: Final answer
    x = 537,031.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.